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Support typing.Annotated on top of typing_extensions.Annotated #8371

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Merged
merged 1 commit into from
Feb 6, 2020
Merged

Support typing.Annotated on top of typing_extensions.Annotated #8371

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3 changes: 2 additions & 1 deletion mypy/typeanal.py
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Original file line number Diff line number Diff line change
Expand Up @@ -43,6 +43,7 @@
'typing.Union',
'typing.Literal',
'typing_extensions.Literal',
'typing.Annotated',
'typing_extensions.Annotated',
} # type: Final

Expand Down Expand Up @@ -311,7 +312,7 @@ def try_analyze_special_unbound_type(self, t: UnboundType, fullname: str) -> Opt
return UninhabitedType(is_noreturn=True)
elif fullname in ('typing_extensions.Literal', 'typing.Literal'):
return self.analyze_literal_type(t)
elif fullname == 'typing_extensions.Annotated':
elif fullname in ('typing_extensions.Annotated', 'typing.Annotated'):
if len(t.args) < 2:
self.fail("Annotated[...] must have exactly one type argument"
" and at least one annotation", t)
Expand Down